White Lake Conservancy District Dam Reservoir Report

Last Updated: December 5, 2025

The White Lake Conservancy District Dam, also known as Prince's White Lake Dam, is a local government-owned structure located in Johnson, Indiana.


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Summary

Completed in 1952, this Earth-type dam stands at a height of 55 feet and serves primarily for recreational purposes. Situated on an unnamed tributary of Mud Creek, the dam has a maximum storage capacity of 300 acre-feet and covers a surface area of 12.6 acres.

Despite its fair condition assessment, the White Lake Conservancy District Dam poses a high hazard potential, with a moderate risk level. The dam's inspection frequency is every two years, with the last inspection conducted in November 2017. While the dam does not have an Emergency Action Plan (EAP) in place, it is regulated, permitted, inspected, and enforced by the Indiana Department of Natural Resources (IDNR), ensuring its compliance with safety standards and guidelines. With its picturesque location and recreational significance, the White Lake Conservancy District Dam stands as a vital water resource for the community, attracting water resource and climate enthusiasts alike.

Year Completed

1952

Dam Length

450

Dam Height

55

River Or Stream

UNNAMED TRIBUTARY MUD CREEK

Primary Dam Type

Earth

Surface Area

12.6

Hydraulic Height

56

Drainage Area

0.21

Nid Storage

300

Structural Height

57

Outlet Gates

None

Hazard Potential

High

Nid Height

57
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.